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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>

    <script>
        function fu(name, age) {
            this.name = name;
            this.age = age;
        }
        let son1 = new fu("起飞", 20)
        let son2 = new fu("cat", 957)
        console.log(son1, son2)
    </script>

</body>

</html>